ES314792A1 - A procedure for the preparation of an elastic fiber. (Machine-translation by Google Translate, not legally binding) - Google Patents
A procedure for the preparation of an elastic fiber. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES314792A1 ES314792A1 ES0314792A ES314792A ES314792A1 ES 314792 A1 ES314792 A1 ES 314792A1 ES 0314792 A ES0314792 A ES 0314792A ES 314792 A ES314792 A ES 314792A ES 314792 A1 ES314792 A1 ES 314792A1
- Authority
- ES
- Spain
- Prior art keywords
- polymer
- weight
- segments
- see formula
- hard segments
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract 3
- 210000004177 elastic tissue Anatomy 0.000 title abstract 2
- 229920000642 polymer Polymers 0.000 abstract 5
- 239000004970 Chain extender Substances 0.000 abstract 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 2
- 239000005056 polyisocyanate Substances 0.000 abstract 2
- 229920001228 polyisocyanate Polymers 0.000 abstract 2
- 125000004958 1,4-naphthylene group Chemical group 0.000 abstract 1
- 229920006125 amorphous polymer Polymers 0.000 abstract 1
- 150000001875 compounds Chemical group 0.000 abstract 1
- 150000004985 diamines Chemical group 0.000 abstract 1
- 125000005442 diisocyanate group Chemical group 0.000 abstract 1
- 125000000524 functional group Chemical group 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 abstract 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 abstract 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 238000009987 spinning Methods 0.000 abstract 1
- 125000001424 substituent group Chemical group 0.000 abstract 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
A process for the preparation of an elastic fiber in which at least 85% by weight of the fiber-forming polymeric material is a segmented long-chain polyurethane, where the polymer molecules consist essentially of 50 to 95% by weight of segments soft newspapers and 3 to 5% by weight of periodic hard segments, said soft and hard segments being bonded together through urethane junctions, said soft segments being the remainder that remains after separating from the terminal functional groups of a amorphous polymer with a melting point of less than 60º C. and a molecular weight of more than 600, the said hard segments consisting of the rest of the polymeric molecules remaining between the urethane linkages and containing at least one repeat unit of a nitrogenous polymer which in the fiber-forming molecular weight range has a melting point above about 200º C; with the improvement that at least 12% by weight of the total hard segments in said polymeric molecules are divalent radicals of formula: ** (See formula) ** where said divalent radicals are all linked to NH groups; R "is a lower alkyl radical selected from the group consisting of methyl, ethyl, and n-propyl; X is a radical selected from the group consisting of (a) p-phenyl (b) p-xilileno (c) 1,4-cicloexileno (d) 4,4'-bifenileno (e) 1,4-naphthylene (f) 1,5-naftileno (g) 2,6-naftileno (h) (see formula) where -Y- is selected from the class consisting of ** (See formula) ** (i) radicals as defined in (b), (d), (e), (f), (g) and (h) hydrogenated in the ring, and (j) Radicals as defined in (a), (b), (c), (d), (e), (f), (g), (h) and (i) that they have substituted in the ring by at least one substituent of the class consisting of methyl, methoxy and ethyl; said process being characterized by spinning filaments of a segmented polymer prepared by reacting a polymer with a molecular weight between 600 and 5,000 and a molar excess of a polyisocyanate and by extending the chain of the isocyanate-terminated polymer with a chain extender containing more than one active hydrogen atom, the polyisocyanate and/or chain extender containing, at least in part, one or more hindered tertiary compounds selected from the hindered tertiary diisocyanates of the formula: ** (See formula) ** and hindered tertiary diamines. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US397358A US3261576A (en) | 1962-06-14 | 1964-08-25 | Aircraft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES314792A1 true ES314792A1 (en) | 1966-09-01 |
Family
ID=34519868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0314792A Expired ES314792A1 (en) | 1964-08-25 | 1965-06-30 | A procedure for the preparation of an elastic fiber. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES314792A1 (en) |
-
1965
- 1965-06-30 ES ES0314792A patent/ES314792A1/en not_active Expired
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